The information
The owners of the spanish clubs have their business beyond sports. Some of them share those business or are rivals, some other are involved in the construction crisis, and that explains some decissions or the economic problems of some soccer clubs.

The design
I used the spinning circle so I avoid having some clubs above others. This was not about classification or size of the clubs. And it made easier to show relationships of the club owners and left the center to explain the data when you click on one team.